Help in my VB Code .. to Delete




I have been trying to solve this problem since morning, and haven't really come up with a solution. it is frustrating. please help.

i have a datagrid and got a delete column

<asp:datagrid id="dgdocument" runat="server" AutoGenerateColumns="False" EnableViewState="True" OnDeleteCommand="DeleteCommand">
<asp:ButtonColumn Text="Delete" CommandName="Delete"></asp:ButtonColumn>
<asp:BoundColumn DataField="Param1" HeaderText="Param1"></asp:BoundColumn>
<asp:BoundColumn DataField="Param2" HeaderText="Param2"></asp:BoundColumn>
<asp:BoundColumn DataField="Param3" HeaderText="Param3"></asp:BoundColumn>

and the VB code is

Sub DeleteCommand(ByVal Sender As Object, ByVal E As DataGridCommandEventArgs)
Dim deletekey = dgdocument.DataKeys(CInt(E.Item.ItemIndex))

'load the XML
Dim doc As New XmlDocument()
Dim onode As XmlElement = doc.SelectSingleNode("cashier/tag[@section='workinformation-" & lbunique.Text & "' and @param1='& deletekey & ' ]")

'not to sure whether this is right
Dim oldNode As XmlNode = doc.RemoveChild("cashier/tag[@section='workinformation-" & lbunique.Text & "' and @param1='& deletekey & ' ]")

' ---------------- this is not right : deleting the node

' save the xml

dgdocument.EditItemIndex = -1
End Sub

and the XML file is

<tag section="work-14" param1="1" param2="345" param3="7/9/2003 08:00 AM" />
<tag section="work-14" param1="2" param2="345" param3="7/9/2003 08:00 AM" />
<tag section="work-14" param1="3" param2="345" param3="7/9/2003 08:00 AM" />
Param1 is a unique field.

What should the right syntax be to remove the node from the XML file.

Any help is appreciated.

Thank You


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